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i v"UNITED STATES PATENTN OEETCE?,

EDGAR H. MORGAN AND oHAELEs MoEGArLoE EEEEPORT, ILL., AssrGNons TO THENEWUN ION MANUFACTURING COMPANY, OF SAME PLACE.

COFFEE-MILL.

SPECIFICATION forming part of Letters Patent No. 329,065, vdated October27, 1885. Application led November 1l, 1884. Serial No. 147,813. (Nomodel.)

o-'tZZ whom t may concern.- fifBe it known that we, EDGAR H. MORGAN, aresident of Freeport, in the county of Stephenson and State of Illinois,and GHARLEs MoR- GAN, also a resident of Freeport, in the county ofStephenson and State of Illinois, have invented certain new and usefulImprovements in Coffee-Mills; and we do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

Our invention relates to improvements in coffee-mills, and is fullydescribed, explained, and claimed in the following specication and shownin the accompanying drawings, in which Figure l is a view of the mill inperspective, a part of the hopper being broken away to show the internalconstruction; Fig. 2, acentral vertical section of the mill, the drawerbeing removed and the plane of section passing through one of the bracesK, which connect the bowl I and hollow-post J; Fig. 3, a bottom plan ofthe grinding-shell L, and Fig. 4 a side elevation ofthe cone L and theparts formed integrally therewith.

In these views, B is abase-plate,preferably of wood and A, a cast-ironframe, consisting of a top plate and four legs, each of which isprovided with a horizontal iiange adapted to be screwed to thebase-plate. On three sides of the frame A the space between the legs maybe cut to any desired form, either plain or ornamental; but the fourthsideis formed with a rectangular opening for the admission of a drawerresting on the base-plate, and preferably of such size as to touch thelower face of the top plate of the frame and the inner faces of the legsat the four corners of the frame. This drawer may be of any desiredmaterial; but for economy of space7 weight, and cost we prefer to makeit with a wooden front and sheet-metal sides and bottom, as shown. Thesides of the drawershow through the openings between the legs of theframe, and any desired ornamentation may be applied to them.

In the center of the top plate of the frame A is a circular opening, andabove the opening is a frusto-conical shell, L, provided withgrinding-surfaces formed'on its inner face.

in size to form shoulders, and the shoulder at the lower margin rests onthe margin of the opening in the top plate. A bowl or hopper, I, restson the shoulder at the top of the shell L, and a series of bolts orrivets, M, connect the hopper and the top plate of the frame A, and thusbind together the frame A, 'the shell L, and the hopper I.

From the lower margin of the hopperspring three integrally-formedconverging braces, K, whose inner ends support an integrally-formedvertical hollow post, J ,which forms the bearing of the shaft of thegrinding-cone. .This shaft consists of three i ntegrally-formed parts-Viz., a lower cylindrical part, Q, journaled in the hollow post J, asquare or otherwise noncylindrical portion, P, above the cylinder Q, anda' screw-threaded portion, F, above the squared space P and of lessdiameter than such squared part, On the lower end of the shaft is formedintegrally a grinding-cone, consisting of a preferably hemisphericalbreaker, L', and a frusto-conical grinder, L, below the The Vlower andupper edges of theshell are reduced breaker, and on the lower margin ofthe cone is formed integrally an undressed or plain outward-extendinghorizontal annular flange, N,

lying below the shell L and the space between said shell and the cone.On the square portion l? of the shaft rests an internally-squaredsocket, H, formed integrally with an ordinary crank, O, andabove thesocket His a nut, G, engaging with the screw F. The socket H issupported by the post J, which thus sustains the weight of the crank,the cone, and the cone-shaft, and the nut G and screw F form a means forraising or lowering the cone, and thus adjusting the space between thecone and shell. The raising'or lowering of the cone also raises orlowers the iiange N, and the raising or lowering of the iiange impedesor retards the flow of ground material from the space between the coneand shell. If the flange be raised so far as to stop the ilow of groundmaterial entirely, the same particles are rubbed one upon another untilthey are ground to powder; or the ange may be lowered suiificiently tofound that a more perfect regulation can b e thusv obtained than by themere increase or decreaseY of the space between the grindings'urfaces.

The frame A, the shell L, and the hopper I may, if desired, be cast inone piece, and we.

have, in fact, manufactured a large number of these mills in that way;but the construction shown in the drawings presents advantagesin castingand finishing which render it pre-ferable in our opinion. v

Having now described our invention and explained its operation, what weclaim as new, and

desire to secure by Letters Patent, is- A l. 'The herein-describedcoffee-mill, comprising the frame A, shell L, and hopper I, the braces Kand hollow post J, formed integrally with said hopper, the grinding-coneL L,sus

` Apended within said shell and provided with-the undressed or plainannular regulating-ange N, and the cone-shaft formed integrally withsaid cone and journaled in said hollow post,

j, substantially as shown and described, and for -the purpose set forth.

Y -2. The herein-described coffee-milhcomprising theshell L and hopperI, the braces K and hollow post- J, the cone suspended within said shelland'provided with the undressed. or plain annular regulating-flange N,the conef shaft consisting. of the cylindrical portion Q, ythe squareportion P, and the screw F, the socket "H, fittingon said square portionof the coneshaft and resting on the post J, and the crank O, formedintegrally with said socket, and the nut G, engaging the screw F andadapted t0 raise and lower the cone, substantially as shown anddescribed, and for the purpose set;4 forth.

3. The combination of the shell L, the grinding-cone suspended withinseid shell and cooperating therewith, the undressed or plainregulating-flange N, formed on the lower-maggin of said cone, andmeans., substantially as shown and described, for supporting andfprraising and lowering said cone. y

In testimony whereof we have signed this specification in thepresenc'eof two subscribing witnesses. y

' EDGAR H. MORGAN.,

, CHARLES MORGAN.

Witnesses: l

J. A. GRAIN, L. M.- CURRIER.

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